Q = 1


class Map:
    def __init__(self, name):
        self.name = name
        self.place

class Road(Map):
    def __init__(self, startplace, endplace, distance):
        self.startplace = startplace
        self.endplace = endplace
        self.distance = distance
        self.phromone = 0
        self.rate = 0

    def release(self):  # 释放信息素
        self.phromone += Q / self.distance
        return self.phromone

    def phromone(self):
        pass

    def distance(self):
        pass